A146555 Number of n X n arrays of squares of integers summing to 40 with every element equal to at least one neighbor.

4, 128, 120672, 102504963, 209207867680

Offset

2,1

Links

Table of n, a(n) for n=2..6.

Crossrefs

Sequence in context: A229385 A141367 A141368 * A305568 A057134 A041495

Adjacent sequences: A146552 A146553 A146554 * A146556 A146557 A146558

Keyword

nonn

Author

R. H. Hardin Apr 14 2009

Status

approved